Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc47f2307e873c60…

MALICIOUS

PDF

43.4 KB Created: 2021-05-16 06:49:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: a7f2d2c059aaf689eba76c94ae5c9bd3 SHA-1: ff999d1572c1c65a337ccf0e18873bc0a8df7db4 SHA-256: dc47f2307e873c6067df9155129cefb411c0aab924d939ebadb2b99900472102
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links and a lure for game hacks, specifically mentioning Roblox and Coin Master. The primary link directs to a URL associated with 'roblox-fun-robux-game-hack'. While no scripts were explicitly extracted, the PDF structure and heuristics indicate it's designed to redirect users to potentially malicious websites. The ML classifier also strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/roblox-fun-robux-game-hack PDF link annotation
    • http://ohsawamacrobiotics.com/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/descargar-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-cheat-codes_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/get-robux-com_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/roblox-avatar-tester_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/how-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://ohsawamacrobiotics.com/images/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000046e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46E1 28160 bytes
SHA-256: 2c65d81e090ed5f851bfdb37702ac7f08045201bc75ceabe25565e6a54ce89a5
font_01_sfnt_off00008888.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8888 18088 bytes
SHA-256: ac2c94b57f1ea6ff8aec27fdfc5f5b2afbfa2dfe444b62468b33a6e8e25f796e

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